Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy And Physiology 2 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

Know 7 things about each C.N.

1
Q

What are the 7 things to know about the olfactory nerve?

A

1 olfactory nerve

  1. I
  2. Pure sensory efferent impulses for sense of smell.
  3. It originates in the mucosa of the nasal cavity.
  4. It is apart of the temporal lobe.
  5. It is only sensory fibers.
  6. It exists out the cribriform of the ethmoid bone.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 7 things to know about the optic nerve?

A
  1. Optic Nerve
  2. (II)
  3. Pure sensory afferent impulses for vision
  4. Retina of the eyes
  5. Synapse in thalamus and enters occipital visual cortex
  6. Sensory afferent fibers.
  7. Optic Canal of the sphenoid skull region.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the 7 things to know on the oculomotor nerve?

A
  1. Oculomotor (eye mover)
  2. (III)
  3. Somatic motor fibers to move 4 out of 6 entristic eye muscles. Which include, inferior oblique (extortion/lateral rotation of the eye), superior inferior medial rectus muscles of the eye (levitate, depresses, and adducts the eye) Levarator palpabrae, which moves eyelids up.

Parasympathetic (automatic) motor fibers to sphincter pulpillae ( circular muscles of the iris) causing pupil muscles to constrict. And cilliary muscle, which controls lens shape for visual focusing.

  1. Passes through the bony orbit of the eye.
  2. Ventral midbrain in junction with the pons.
  3. Automatic motor efferent fibers somatic motor efferent fibers.
  4. Superior orbital fissure of the sphenoid bone.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the 7 things to know about the Trochlear nerve?

A
  1. Trochlear
  2. (IV)
  3. Somatic motor nerves intort (adducts) the superior oblique muscle (from the pulley shape trochlea)
  4. Superior oblique muscle of the eye
  5. Fibers emerge from the dorsal midbrain
  6. Somatic motor efferent fibers
  7. Superior orbital fissure of the sphenoid bone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the 7 things you need to know about the Trigeminal nerve?

A
  1. Trigeminal
  2. (V)
  3. Largest cranial nerve and has 3 subdivisions. Main general sensory nerves of the face, transmits afferent impulses from touch, temperature, and pain receptors.
    ( The cell bodies of all 3 subdivisions lie in the Trigeminal ganglion)
  4. Extends from the pons to the face. But depends on the subdivision
  5. Same as 4
  6. Sensory afferent and motor efferent fibers.
  7. Depends on the subdivision.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is V1 and its function and location?

A
  1. Ophthalmic division.
  2. V1
  3. Conveys sensory impulses from skin of anterior scalp, upper eyelid, and nose.
    From
    Nasal cavity mucosa, cornea, and lacrimal gland
  4. Fibers run from face to pons via the superior orbital fissure of the sphenoid bone.
  5. Sensory afferent fibers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is V2 function and location?

A
  1. Maxillary division
  2. V2
  3. Conveys sensory impulses from nasal cavity mucosa, palate, upper teeth, gum & upper lip, skin of cheek & lower eyelid.
  4. From face to pons ( mid-third of the brain.)
  5. Upper teeth, gum & lip, palate & skin of cheek & lower eyelid.
  6. Sensory afferent fibers
  7. Foremen rotundum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is V3 and its function and purpose?

A
  1. Mandibular division
  2. V3
  3. Conveys sensory impulse from anterior tongue, lower teeth, gum & lip, skin of jaw, skin of chin & temporal region of scalp.
  4. From face to pons
  5. Lower teeth, gum, lips, skin of jaw, skin part of scalp
  6. Sensory afferent fibers
  7. Foremen ovale

Plus motor fibers to transmit motor fiber to muscle of mastification.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the 7 things to know about the abducens?

A
  1. Abducens
  2. VI
  3. Motors the lateral rectus muscle of the eye.
  4. Eyes
  5. Inferior of the pons
  6. Somatic motor fibers
  7. Superior orbital fissure of the sphenoid bone
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the 7 things to know about the facial nerves?

A
  1. Facial nerves
  2. VII
  3. Somatic motor fibers = convey motor impulses to skeletal muscles of the face, except for chewing.
    Sensory afferent fibers = transmit proprioceptor impulses from same muscles to pons.
    conveys sensory impulse from taste buds from anterior 2/3 of the tongue.
    Parasympathetic (autonomic motor) visceral glands = transmit parasympathetic autonomic motor impulse to lacrimal glands, nasal glands, Paratine glands, submandibular gland, & sublingual salivary glands.
  4. Frontal & temporal lobe
  5. Pons.
  6. Motor, sensory, & parasympathetic autonomic fubers.
  7. Motor and sensory are located in the stylomastoid foramen and parasympathetic autonomic fiber is located at internal acoustic meatus. Both on petrous temporal bone.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the 7 things to know about the vestibulocochlear nerve?

A
  1. Vestibulocochlear nerve.
  2. VIII
  3. Vestibular branch sends afferent impulses for sense of equilibrium.
    Cochlear branch sends afferent impulses for sense of hearing.
  4. Inner ear labyrinth
  5. Pons & medular border.
  6. Sensory afferent fibers
  7. Internal acoustic meatus of the petrous temporal bone.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 7 things to know about the glossopharyngeal nerve?

A
  1. Glossopharyngeal nerve
  2. IX
  3. Somatic motor fibers = provides somatic motor fibers to stylopharyngenus (muscle of the pharynx for swallowing)
    Sensory fibers = conducts taste to posterior 1/3 of tongue. Conducts general sensory impulses (touch, pressure, pain) from pharynx and posterior tongue.
    Chemorecptors in the carotid body to monitor O2 and CO2 levels in the body, regulate respiratory depth and rate. Than impulses from baroreceptors
    of carotid sinus that helps monitor blood pressure.
    Parasympathetic fibers provide motor fibers to parotid salivary glands.
  4. Tongue and pharynx
  5. Fibers from medulla oblongata
  6. Sensory, motor, and parasympathetic fibers.
  7. Jugular foreman behind carotid canal in between temporal and occipital bones.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the 7 things to know about vagus nerve?

A
  1. Vagus
  2. X
  3. Motor fibers go to muscles to muscle of the pharynx & larynx.
    Sensory from posterior tongue & pharynx, thoracic & abdominal viscera.
    Parasympathetic motor fibers innervate heart, lungs, smooth muscles of pharynx, larynx, thoracic abdominal viscera.
  4. Neck region into thorax & abdomen.
  5. Medulla of the brain stem
  6. Motor, sensory, and parasympathetic fibers
  7. Jugular foreman
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the 7 things to know about the spinal accessory nerve?

A
  1. Spinal accessory nerve
  2. XI
  3. Motor fibers go to the muscles of neck, shoulder, (sternodeidomastoid) trapezius, pharynx and larynx.
  4. Neck and head ( these fibers form from routlets of spinal cord
    Rootlets are from superior region c1-c5. These fibers enter through the skull through foreman magnum & jugular foreman. Goes to neck muscle.
  5. Extends from lateral medulla oblongata.
  6. Motor efferent fibers
  7. Foremen magnum and jugular foreman
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 7 things to know about the hypoglossol nerve?

A
  1. Hypoglossol nerve
  2. (XII)
  3. Controls tongue movements. And motor fibers go to intrinsic and extrinsic tongue muscles.
  4. Tongue
  5. Extends from the medulla oblongata.
  6. Motor efferent fibers
  7. Hypoglossol canal.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 ways to classify sensory receptors?

A
  1. The type of stimulus they detect
  2. Their body location
  3. Their structural complexity

Classify sensory receptors by
Detect, location, complexity.

Dean’s list complicates.

17
Q

What is mechanoreceptors?

A

Response to mechanical force such as touch, pressure ( including blood pressure) , vibration, and stretch.

18
Q

What are thermoreceptors?

A

Response to temperatural changes

19
Q

What is photoreceptors?

A

Such as those of the retina eye, response to light.

20
Q

What are chemoreceptors?

A

Response to chemical solutions ( molecules smelled or tasted, changes in blood or interstitial fluid chemistry)

21
Q

What is nociceptors?

A

Noci = harm. Response to potentially damaging stimuli that result in pain. For example searing heat, extreme cold, excessive pressure, and inflammatory chemicals are interpreted as painful.

These signals can stimulate subtypes like thermoreceptors

22
Q

Exteroreceptors are?

A

Sensitive to stimulus outside of the body, most are out or near the surface of the body.

They include touch, pressure, pain, and temperature receptors. And most receptors of the special senses ( vision, hearing, equilibrium, smell and taste.)

23
Q

Interoceptors are?

A

Also known as viseralreceptors. Responds to stimulus within the body.

Like internal viscera and blood vessels. Monitor a variety of stimuli like chemical changes, tissue stretch, and temperature.

Sometimes causes us to feel pain, discomfort, hunger, or thirst. We are usually unaware of their workings.

24
Q

Proprioceptors are?

A

Response to internal stimuli but of a more specific location. Occur in skeletal muscles, tendons, joints, ligaments, and connective tissue covering bones and muscles.

Proprioceptors constantly advice the brain of our body’s movements by monitoring how much the organs containing these receptors are stretched.

25
Q

Free nerve endings of sensory neurons?

A

L: All. exteroreceptors, internoreceptors, and proprioceptors.
S: All. Chemo, thermo, nociceptors, mechanoreceptors.

Body location:

Most body tissue.

26
Q

Modified free nerve endings. Epithelial tactile complexes ( Merkel cells and discs)

A

L: externorecptors
S: mechanoreceptors; slow adapting

Body location: basal layer of epidermis.

27
Q

Hair follicle receptors?

A

L: externorecptors
S: mechanoreceptors;rapidly adapting

Body location: surrounding hair follicles

28
Q

Tactile (meissner’s) corpuscles

A

L: externorecptors
S: mechanoreceptors; rapidly adapting

Body location: dermal papillae of hairless skin.

Anatomy And Physiology 2 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions